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Allanite-(Ce) Fluorapatite & Quartz

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CLB205909

Allanite-(Ce) Fluorapatite & Quartz

Classic Locality

Description Tabs

Description
Locality: 
Oßling Quarry, Oßling, Bautzen, Saxony, Germany
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.7 × 2.6 × 2.2 cm
Description

Very nice and rare specimen of chocolate brown allanite-ce crystals with some quartz on matrix. When I measured this I discovered yellowish bi-colored crystals that must be fluorapatite (too small and pale for pictures). Includes Ce + La in equal shares (analyzed).

Mineral Data
What's on the rock

Allanite-(Ce)

Formula: 
{CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05b
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
Type Locality: 
Qáqarssuatsiaq, Aluk Island, Kap Farvel, Kujalleq, Greenland

Fluorapatite

Formula: 
Ca2Ca3(PO4)3F
Strunz: 
8.BN.05
Crystal System: 
Hexagonal
Hardness: 
5.0
Streak: 
White
Type Locality: 
Sauberg Mine, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

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